y need the
.count() method on schedule_set() if that even makes a difference.
-Original Message-
From: django-users@googlegroups.com [mailto:django-users@googlegroups.com] On
Behalf Of Kevin
Sent: Tuesday, October 11, 2011 8:43 AM
To: Django users
Subject: Re: Need advice on ForeignKey que
What your looking for is here in the documentation:
https://docs.djangoproject.com/en/1.3/topics/db/queries/#related-objects
records = models.Facility.objects.get(pk=62).schedule_set.all()
On Oct 10, 8:19 pm, "Sells, Fred"
wrote:
> I've got these two tables defined where a Facility can have mult
I've got these two tables defined where a Facility can have multiple
schedules but a schedule can have only one facility.
class Facility(models.Model):
id = models.CharField(max_length=2, primary_key=True)
name = models.CharField(max_length=30)
class Schedule(models.Model):
Hi,
try this:
**
resultList =
list(
set(modelList) &
set(Model1.objects.filter(model2__pk__isnull = False).distinct
())
)
**
or this:
**
resultList =
list(
set(modelList) &
set([m.model1 for m in Model2.objects.all()])
On 29 Jan, 09:52, Odd wrote:
> On 29 Jan, 09:08, Odd wrote:
>
> > >You originally say the model1
> > > has a foreign key to model2 - I interpret that to mean that the
> > > ForeignKey is defined on model1. However, your code references
> > > model1.model2_set - which would imply that the FK is de
On 29 Jan, 09:08, Odd wrote:
> >You originally say the model1
> > has a foreign key to model2 - I interpret that to mean that the
> > ForeignKey is defined on model1. However, your code references
> > model1.model2_set - which would imply that the FK is defined on
> > model2, pointing to model1. S
>You originally say the model1
> has a foreign key to model2 - I interpret that to mean that the
> ForeignKey is defined on model1. However, your code references
> model1.model2_set - which would imply that the FK is defined on
> model2, pointing to model1. So, do you want the objects that are
> po
On Jan 28, 2:33 pm, Odd wrote:
> I have two models, model1 and model2, where model1 has a ForeignKey
> reference to model2.
>
> Given a list of model1 objects, I need to determine which of these are
> used as a foreign key by a model2 object, and return that list. This
> is my current effort:
>
>
I have two models, model1 and model2, where model1 has a ForeignKey
reference to model2.
Given a list of model1 objects, I need to determine which of these are
used as a foreign key by a model2 object, and return that list. This
is my current effort:
returnList=[]
for model1 in modelList:
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